Nut-lock.



A. A. l J. P. DARBY.

NUT LOCK. APPLIUATION FILED SEPT.14, 1999.

955,054. Patented Apr. 12y 1910.

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AVERNO A. DARBY AND JAMES FRANK DARBY, OF 'VIDALIA, GEGRGIA, ASSIGNORSfBY DIRECT AND IVIESNE ASSIGNMENTS, OF THIRD TO WARREN T. JENKINS, AND ONE-THIRD VIDALIA, GEORGIA.

ONE-Train@ 'ro AvEENo A. DAEBY, 'ONE- To MosEs LEADER, ALL 0E NUT-LOCK.

To all whom t may concern:

Be it known that we, AvEnNo A. DARBY and JAMES F. DERBY, citizens of the United States, residing at Vidalia, in the county of Toombs and State of Georgia, have invented new and useful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to nut locks, the object of the invention being to provide a simple, practical and reliable device of the character referred to in which the locking feature may be manipulated by hand and the construction of which will adapt the locking feature to be disconnected from the nut and bolt in a simple manner.

With the above and other objects in view, t-he nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings -Figure l is a plan view of a bolt and nut with the nut loclt in its preferred forni applied thereto. Fig. 2 is an outer face view of the nut, showing also the bolt in end view. Fig. 3 is a perspective view 0f the locking washer toward the outer face thereof. Fig. 4 is a similar view of the lock nut looking toward its outer face.

Referring to the drawings, 1 designates a bolt provided with the usual head 2 and threads 3, said bolt differing from the ordinary bolt only in that it is provided along one side with a longitudinal groove 4, the purpose of which will hereinafter appear.

5 designates the nut threaded on the bolt and which in carrying out the present invention in its preferred form is provided in the outer face thereof with a series of radial kerfs 6 extending from the outer margin of the nut to the inner bore thereof, as shown in Fig. 2, said kerfs being adapted to register one at a time with the grooves l in the bolt.

7 designates a locking washer adapted to t over the end of the bolt and rest against the outer surface of the nut 5, said washer being provided on its inner face with dia- Speccaton of Letters Patent.

Application filed September 14, 1909.

Patented Apr. 12, 1910.

Serial No. 517,534.

metrically opposite tongues S and 9 which extend radially with respect to the bolt and are adapted to simultaneously occupy opposite kerfs 6 in the nut. One of the tongues, as at S) is extended well within the vcentral opening of the locking washer, as shown in Fig. 8 and is preferably of a width equal to the eXtreme depth of the washer and is adapted to rest in the groove l of the bolt, the locking washer thus engages at one and the same time with the groove in the bolt and a kerf in the nut, thereby preventing the relative rotation between the nut and bolt.

rlhe outer face of the locking washer is provided with ratchet teeth 1() and in connection therewith I employ 'a lock nut 11 adapted to be threaded upon the projecting end of the bolt 1 and provided at its inner side with a circumferential flange 12 which is radially divided as shown at 13 and bent down at one side of the dividing line to form a spring lip 14, which lip when the lock nut ll is turned on the end of the bolt, snaps over the ratchet teeth 10 and finally stops in firm engagement with one of the teeth, thereby holding the locking washer close up against the nut so as to maintain the engagement between the tongues 8 and 9 and the kerfs 6 in the outer face of the nut. This prevents the nut from turning loose on the bolt in a practical and reliable manner.

The lock nut 11 is preferably milled or knurled around its periphery as shown at 16 t0 adapt the same to be more easily manipulated by hand. The lock nut may be removed by inserting an instrument along the spring lip 14 to thereby disengage said tongue from the teeth 10 which will enable the lock nut to be thrown off the bolt. The locking washer may subsequently be removed and then the nut may be thrown 0E the bolt.

7e claim In a nu't lock, the combination of a bolt provided with a longitudinal groove along one side thereof, a nut threaded on said bolt and provided in its outer face with radial kerfs, a locking washer provided on its inner face with diametrically opposite tongues adapted to engage the kerfs in the nut, one

of said tongues being also adapted to engage the groove in the bolt, ratchet teeth on the outer face of Said looking Washer, and a lock nut provided with a spring lip adapted to engage the ratchet teeth of the locking Washer7 substantially as and for the purpose described.

In testimony whereof We afhx our sigmltures in presence of two Witnesses.

AVERNO A. DARBY. J. FRANK DAR-BY. vWitnesses JNO. N. PATRICK, J. A. DEW. 

